Ant Fly I
Ant Fly II 
Treehopper Mimicking Fly
Dotted-Wing Lauxaniid Fly
Black Lauxaniid Fly
Long-antenna Lauxaniid Fly
Orange Lauxaniid Fly I
Orange Lauxaniid Fly II
Orange-blue Lauxaniid Fly I 
Orange-blue Lauxaniid Fly II 
Black Stilt-legged Fly
Orange Stilt-legged Fly 
Leaf Miner Fly
Freeloader Fly I
Freeloader Fly II
Freeloader Fly III
Orange-blue Signal Fly
Orange-green Signal Fly
Green Signal Fly
Boatman Fly
Brown-banded Signal Fly I
Brown-banded Signal Fly II
Black-banded Signal Fly
Scarab Fly 
Queensland Fruit Fly
Wild Tobacco Fruit Fly
Ant-mimicking Fly
Water-skating Fly
Vinegar Fly
Unknown Acalyptrata  

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Orange-blue Signal Fly - Lamprogaster bicolor

Family Platystomatidae 

This page contains pictures and information about Orange-blue Signal Flies that we found in the Brisbane area, Queensland, Australia.
Body length 10mm
We saw a few times three to four of those flies dancing on large gum tree trunk in Karawatha Forest.
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Head and thorax of the fly are orange colour with abdomen in dark metallic blue. There are three longitudinal light brown stripes on mesoscutum. Scutellum is yellow in colour. Wings are tinged with orange-yellow, patterned with black spots, leading edge and wing base are orange. Legs are pale orange to brown in colour. Abdomen is dark metallic steel-blue colour.
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Pictures were taken in Karawatha Forest during mid summer. From the reference information, this fly is considered as a rare species.
Signal Flies are usually found on tree trunks where may be a place for courtship. Sometimes a small group of them can be found at one point. While walking on those surface, Signal Flies exhibit a characteristic manner of movement, something like dancing in our human eyes. Those movements include rowing or extend of wings, waving of front pair of legs, move forwards and backwards, extend and raise of proboscis.   

1. The Australian Platystomatidae (Diptera, Schizophora) with a revision of five genera - McAlpine, D.K., 1972, The Australian Museum, p58.

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Up ] [ Orange-blue Signal Fly ] Orange-green Signal Fly ] Green Signal Fly ] Boatman Fly ] Brown Banded Signal Fly I ] Brown-banded Signal Fly II ] Black Banded Signal Fly ]


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Last updated: December 24, 2010.